KVM VPS 磁盘I/O优化、网络优化

限杜甫或者KVM VPS。

一、KVM VPS 磁盘I/O优化
SSH下：
1、

echo 0 > /sys/block/vda/queue/rotational
echo 0 > /sys/block/vda/queue/rq_affinity
echo noop > /sys/block/vda/queue/scheduler
echo "echo 0 > /sys/block/vda/queue/rotational" >> /etc/rc.local
echo "echo 0 > /sys/block/vda/queue/rq_affinity" >> /etc/rc.local
echo "echo noop > /sys/block/vda/queue/scheduler" >> /etc/rc.local
echo 'vm.swappiness=5' >> /etc/sysctl.conf
echo 'vm.vfs_cache_pressure=50' >> /etc/sysctl.conf

2、

sysctl -p

3、修改fstab

vi /etc/fstab
proc            /proc           proc    defaults        0       0
# / was on /dev/sda1 during installation
UUID=bf175032-898a-4883-a702-ca0ab9e51d1d /               ext4    noatime,errors=remount-ro 0       1
# swap was on /dev/sda5 during installation
UUID=2d7209ed-b4c1-4bb6-96f2-73d7ba82ca9b none            swap    sw              0       0
/dev/scd0       /media/cdrom0   udf,iso9660 user,noauto     0       0

4、

mount -o remount /

二、KVM VPS 网络优化
SSH下：

net.core.rmem_max=16777216
net.core.wmem_max=16777216
net.ipv4.tcp_rmem=4096 87380 16777216
net.ipv4.tcp_wmem=4096 65536 16777216

via：https://billing.mycustomhosting.net/support/knowledgebase/3/view/KVM-Disk-IorO-Optimization
https://billing.mycustomhosting.net/support/knowledgebase/4/view/KVM-Network-Optimization

所有主机信息仅是为及时分享并收录，不做推荐！
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